From Sidur Tehilas Hashem, Sidur Rav Amram, and Nitei Gavriel Hilchos Yom Hakipurim 10:20 you take additional chickens for Kaparos for a pregnant lady in order to cover the fetus. What sin (or sins) ...

In the Rama on SA OC Siman 605, we find the custom of "Kaparos" that many do Erev Yom Kippur. Of those who perform this custom a chicken is used. However many also use money (i.e. instead of waving a ...